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Finding the Fourth Proportional to 638,322.58, 957,702.59 and 217,893.70

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Solution

The fourth proportional to 638,322.58, 957,702.59 and 217,893.70 is: 326,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,322.58 : 957,702.59 = 217,893.70 : x
  2. Step 2: Convert to fraction form
    638,322.58/957,702.59 = 217,893.70/x
  3. Step 3: Cross multiply
    638,322.58x = 957,702.59 × 217,893.70
  4. Step 4: Simplify right side
    638,322.58x = 208,677,354,956.70
  5. Step 5: Solve for x
    x = 208,677,354,956.70/638,322.58
  6. Step 6: Final answer
    x = 326,915.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.